Trouble is I can't figure out how to check the oil...

I haven't had a mountain bike in about 15 years, and this thing is sooo much much better than my previuos bike. She is just an "entry level" bike, but it's hard for me to accept calling it "entry level" after what I paid for it!!! Then again, I'm a cheap skate.
It's a real blast on the trails, but she ain't as quick as my speedy on the road...